Bronco Drilling Company, Inc. Announces Amended Credit Facility.

OKLAHOMA CITY -- Bronco Drilling Company, Inc., (Nasdaq/GM:BRNC), announced today that it has amended and restated its credit agreement. Under the new facility, Bronco will refinance all existing indebtedness with the remainder available for working capital and general corporate purposes, which may include acquisitions.

The total availability under the new facility is $150 million and borrowings under the facility are guaranteed by all of Bronco's domestic subsidiaries and are secured by generally all of the assets of Bronco and its subsidiaries. Draws under the facility will bear interest at 4.0% over LIBOR or 3.0% over Prime based on the instructions of the company for individual draws. The facility matures in September 2013.

Frank Harrison, Bronco's Chairman and CEO stated, "We are very pleased to be able to put this facility in place during a very challenging time in the credit markets. This facility will provide the liquidity and flexibility to move forward with the company's strategic goals."

Fortis Bank is the facility's Administrative Agent and acted as Joint Lead Arranger and Sole Bookrunner for the banks in the syndicate, which include Royal Bank of Scotland, who acted as Joint Lead Arranger and Co-Syndication Agent, Prudential Insurance Company, who acted as Co-Syndication Agent, The CIT Group/Business Credit, Caterpillar Financial Services, Natixis and Legacy Bank.

About Bronco Drilling

Bronco Drilling Company, Inc., a publicly held company headquartered in Edmond, Oklahoma, is a provider of contract land drilling services and workover services to oil and natural gas exploration and production companies. Bronco's common stock is quoted on The Nasdaq Global Market under the symbol "BRNC." For more information about Bronco Drilling Company, Inc., visit http://www.broncodrill.com.

Cautionary Note Regarding Forward-Looking Statements

The information in this report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements include, but are not limited to, comments pertaining to use of funds under the credit agreement described above. Such statements are subject to risks, uncertainties and assumptions, including factors described in Bronco Drilling Company, Inc's. Annual Report on Form 10-K filed with the SEC on March 17, 2008, as amended on April 29, 2008, and other filings with the SEC, which are available free of charge on the SEC's website at www.sec.gov. Bronco cautions you that forward-looking statements are not guarantees of future performance and that actual results or developments may differ materially from those projected or implied in these statements.